Refractory brick construction



April 18, 1939. J. B. TRACY l 2,155,026

REFRAGTY BRICK CONSTRUCTION Filed Aug.- 25, 1937 Patented Apr. 1939 UNITED STATES:

2.155.025 asmcroar Bmcx CONSTRUCTION Jay B. Tracy, Upper Darby, Pa.; animar to General Refractorics Company,

Vania a corporation of Pennayl f' ApplicationV August 25, 1937, Serial No. 160,843

Domestic boilers of the vertical type comprise,4`

base and av water I The invention also comprises the improvements f a shell mounted upon .a fiat leg spaced above the nat face of the base, and when adapted for use with liquid fuelburners the combustion chamber is generally circular or curvilinear in plan. The combustion chamber is bounded by a refractory wall which must protect the lower part of the water leg from undue heat and which is backed up-by a filling oi' refractory material confined within the shell. 'Ihe installation of the refractory lining and the assurance of its proper performance present difiiculties, among which the following maybe referred to, the lin-J ing must be inserted and installed through, the

door with which the shell Iis provided and which does not afford much room for lining must extend above the lower portion of the water leg in order to protect the wall of the water leg if mud or sediment should collect in the water leg; the lining mustl be' capable of conforming to the required cross section of the combustion chamberand therefore its units .mustbe capable of being individually positioned and sup'- ported at any point on the face of thebase, and

g5 the units should be duplicates; the lining should be as free as possible from Joints and the necessary Joints should be such as are readily sealed f by the packing of heat insulating material which Surrounds the lining. e

:c The objects of the present invention are first,

' to provide a comparatively inexpensive structure by which the combination as a whole is improved,

simplified and vmade more efficient in respect to both construction 35 second, to provide reason of itsform and provisions is especially useful as an element ofthe complete combination or structure, and which is adapted to impart to the complete combination or structure, as a whole, o improved results.

Generally stated the invention comprises substantially rectangular refractory bricks having fiat ends which adapt themto be stood in any required position and location upon the flat face of the base i-n conformity withlthe outline of the combustion chamber, and of which the length exceeds three times the width, whereby the bricks in a single course extend from the base above the bottom of the water leg to protect it from .o overheating and the sides of the brick having interengaging curved tongue and groove elements struck from thecentre line oi' the brick on-substantially the same radius, and the substantially flat and parallel faces of thev respectively a bearing on the outside for the heat and mode of operation; and

the purpose; the y a refractory brick which by.

brick -providing insulating packing, and on theinside asmooth Wall defining the combustion-chamber.

to be presently described and finally claimed.

In the following description reference-will bev made to the accompanying drawing forming part hereof and'in which'. y'

Flgurel is a vertical sectional view il1ustrat-.

ing featuresof the invention.

rig. 21s a topor plaaview or mi 'i with parteA omitted, and I 'l Figs. 3 and 4Vare end fviews respectively illuse trating modifications. l

' Referring to the drawing. there -is shown a domestic boiler oi' the vertical type and it includes a base having a 'flat face l, a shell 2 and a water leg 3 with a sediment space 4 at the lower -portlon of the water leg, the 'sediment space I is spaced above the flat face i.' There is a combustion chamber and itis of generally curvilinear cross section, as shown itis substantiallycircular but it is frequently oblong with straight sides and curved ends, the latter form is not shownbecause -it is' too well understood 'to require illustration or further'description. 'I'he refractory bricks 5 -have substantially flat faces and curved tongue and groove edges of substantially the same radius and struck from acenter at'substantially the median line of the brick, in this 'way the bricks may conform to the cross section of thejcombus-v tion chamber. 'I'he bricks extend fromv the fiat face I of the base to a point above the 'sediment space 4 so that they serve to protect the latter from overheating. The vbricks have, fiat ends of which one conforms to'and rests on the dat face I of the base and of which the other isv adapted to resist `combustion at and near the sediment space, l. I indicates insulating material interposed between the shell 2 and the bricks and it is adapted to stop or pack the tongue and groove joints. the substantially fiatand parallel faces of the brick provide respectively a bearing for the packing material I and a smoothwall for the combustion chamben'the 'fiat ends of the bricks enable them to be placed'in'any position on the.

fiat face l so as to conforlnlwith the contour of thercombsution chamber which maybe either circular or somewhat oblong.

'I'he faces of the brick havebeen referred to as at and generally parallel, however, one of them may be fiat and the other arcuate or curved as in Fig'. 2,` or both, of them may be rarcuate orv curved as in `Iilg. 3, or both of them may be fiat and straight as in Fig. 4.2 8 indicates liquid fuel burning equipment.v

By Way of further description it may be said that the width of the brick may be from four to nine inches and the thickness of it approximately from one to three inches and these dimensions are standard with bricks. However, the .brick Ys descriptively from fourteen to twenty-four inches long which is an unusual dimension and its purpose is to have the brick extend, vwhen stood on its flat end on the flat face of the base sufficiently far above the bottom of the water leg to protect it from fusion and disintegration by burning.

I claim:

For use with a liquid fuel burner and a domesticI boiler of the vertical type having a flat base and a shell and a water leg with a sediment space at the bottom thereofand spaced from and above the flat base and having a combustion chamber of generally curvilinear outline, ,the combination with the shell and flat base of refractory bricks each having parallel faces and curved'tongue and grooved edges of substantially the same `radius and struck from a center at substantially the median line of the brick whereby the bricks conform to the cross section of the combustion chamber, said bricks each individually extending from the flat face of the base to a point above the sediment space and having flat ends of which one conforms to and rests on the flat face of the base and of which the other is adapted to resist the combustion at and near the sediment space, and insulating material interposed between the Water leg and the flat end of the bricks and adapted to stop or pack the tongue and groove 15 joints.

l JAY B. TRACY. 4 

